Emphatic
/əmˈfætək/
noun
An emphatic consonant.
A word or phrase adding emphasis, such as "a lot" or "really".
adjective
Characterized by emphasis; forceful.
Stated with conviction.
“He gave me an emphatic no when I asked him out.”
(grammar) Belonging to a set of English tense forms comprising the auxiliary verb do + an infinitive without to.